import java.util.Set;


public class View {

	public void mainWindow()
	{
		
	}
	
	public void viewStudent(Student student)
	{
		
	}
	
	public void viewGroup(Set<Student> student)
	{
		
	}
	
	public void successful()
	{
		
	}
	
	public void error()
	{
		
	}
}
